Jacob batcheld er



UNETED STATES PATENT CFECE. j

JACOB BATCHELD'ER, OF SALEM, MASSACHUSETTS.

SOLEeCUTTING yMAQIPIIUYIE.

Specification of Letters Patent No. 23,889, dated May 10, 1859.

To aZZ whom it may concern:

Be it known that I, JACOB BA'roI-IELDER, of Salem, county of Essex, Commonwealth of Massachusetts, have invented a new and useful Antifriction Boot and Shoe Sole Cutting Machine; and I do hereby declare that the following is a full and exact description thereof, reference being had to the accompanying drawings and to the letters of reference marked thereon.

To enable others skilled in the art to which my invention belongs, to make and use the same7 I will proceed to describe its construction and operation.

Figure l, of the drawings represents a vertical section through the center of the machine; Fig. 2, a front view of the machine; Fig. 8, a front view of one of t-he knife frames; Fig. 4, a bottom view and Fig. 5, a top view of the same knife frame; Fig. 6, a top view and Fig. 7 a bottom view of the other knife frame.

The knives a, and a, are of such a shape as to correspond to the outline of a boot or shoe-sole, as will be seen from Figs. 4, and 7. They are mounted on bars b, ZJ, which are pivoted to frames c, c', at cZ, and CZ. These pivots cZ, and cZ, are about halfway between the ends of each bar, while near the ends set screws ZL', ZL', and s, s', project from the bars upward and through slots in the frames c, o. By this means it will be seen, the knife bars can be turned on their pivots oZ, cZ, and be fastened by the use of the set screws. The object of this arrangement is to cut differently shaped soles with the same pair of knives. The knife bar b, allows of another adjustment for the same purpose, by means of the thread of the adjusting screw i', taking into corresponding screw threaded-notches in the end of the bar, as seen at y", Fig. 4.

The knife frames 0, c', are fastened to two upright levers each and these levers e, e, and e, e, are 'hung to two cranks each. The levers e, e, are hung to cranks a, f, two of these cranks on each side of the machine; the cranks a, being pivoted to the levers at W, and to the `frame o, of the machine at points n, the latter being the fulcra of the cranks. The lower ends of the levers e, e, are connected to cranks f, 7, extending from the main shaft j.. The levers e', e, of the other knife frame are similarly hung to cranks p, and f', as shown in the drawings. Each lever' c, is pivoted to crank 79, at 79', the crank being fulcrumed at p, and the lower end of each lever e, is connected to a crank f', extending from shaft j. Flywheels :0, are fastened to the ends of shaft y'. A blocks, is provided with a pin r, which passes through a hole in the rail t, of the machine frame. The block can thus be adjusted at a greater or less distance from the rail and can be fastened in any of its positions by means of a set screw u. A board w', is supported by two springs g, fastened to the under side of table w, and curved up at m, as represented in Fig. l. A screw 1, passes through the center of the board fw', and by turning the screw its end can be made to project more or less beyond the board fw', and toward the table w. The block s, and screw r, serve as stops for the front edge of the leather while being cut by the knives a, and a, respectively. A little pin z', projects from one end of the board y w; a spring Z, abruptly bent at Z, and ending in a hook Z, is secured to the frame of the machine at its lower end, at. y,' and a pin 0, extends from the lever n,

The relative functions of the last men tioned parts of the machine will be understood from the operation of the machine now to be described. Sup-pose the parts of the ma` chine to be in the position represented in the drawings, a piece of `leather being placed on table zo, with its front end abutting against stop 1. If shaft j, is now revolved in the direction of arrows z', z', the knife a, will rise above its present position, while the knife a, descends and cuts through the leather. When the shaft has been revolved so far that the cranks f, f', stand vertical, the knife a commences to rise fro-1n the leather and the knife a, begins to descend toward the leather. During the ascent of knife a, the pin 0, on crank n, came in contact with the curved. part Z, of the spring Z, pushing the spring back toward the machine-frame, until the hook Z, at the upper end of the spring slipped from the pin a', at the end of board fw, and thus allowed the board to follow the tendency of its supporting springs g, g, and to rise upward. The leather is now clear of stop 1, and of the under edge of board w, and can be pushed forward until its edge meets the stop s. During the descent of the knife a, and about the time it comes in contact with the leather the pin h, extending from the frame of knife a, meets the supporting spring g, and depresses it and the board w, together With it until the pin z', slips under the hook Z', thus placing the stop fr, again in line with the leather, Which in the mean time has received the second cut. The descent of the board w, serves at the same time the purpose to push down the 'portion of the leather out off by the second cut. The leather can now be pushed forward until its front edge abuts against stop 7', and if the shaft j is further revolved the above described operation Will be repeated.

It will be seen that by adjusting the stops 1*, and s, at diferent distances from each other, and their respective knives soles of various Widths can be cut, Without changing the knives or their relative positions. It

will also be seen that the knives being hung on pivots and thus axial friction being substituted for sliding friction, the power consumed by friction, will be extremely little.

Having described my antifriction boot and shoe sole cutting machine, What I claim therein as new and of my invention and desire to secure by Letters Patent, is:

l. The particular and relative arrangement of the levers e, c, and e', c', with the cranks n, p, and f, f, for giving the re* quired motions to the cutting knives as herein set forth.

2. The use and arrangement of the adjustable and intermediate gage board fw, as described, whereby each alternate sole can be cut of equa-l or unequal Width as set forth.

JACOB BATCHELDER.

Witnesses CHARLES J. BATCHELDER, MARY W. BATCHELDER. 

